<HTML>
<BODY BGCOLOR="white">
<PRE>
<FONT color="green">001</FONT>    package org.hackystat.telemetry.analyzer.language.parser;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    import java.io.BufferedReader;<a name="line.3"></a>
<FONT color="green">004</FONT>    import java.io.StringReader;<a name="line.4"></a>
<FONT color="green">005</FONT>    import java.util.ArrayList;<a name="line.5"></a>
<FONT color="green">006</FONT>    import java.util.List;<a name="line.6"></a>
<FONT color="green">007</FONT>    <a name="line.7"></a>
<FONT color="green">008</FONT>    import org.hackystat.telemetry.analyzer.language.ast.TelemetryChartDefinition;<a name="line.8"></a>
<FONT color="green">009</FONT>    import org.hackystat.telemetry.analyzer.language.ast.TelemetryChartYAxisDefinition;<a name="line.9"></a>
<FONT color="green">010</FONT>    import org.hackystat.telemetry.analyzer.language.ast.TelemetryDefinition;<a name="line.10"></a>
<FONT color="green">011</FONT>    import org.hackystat.telemetry.analyzer.language.ast.TelemetryReportDefinition;<a name="line.11"></a>
<FONT color="green">012</FONT>    import org.hackystat.telemetry.analyzer.language.ast.TelemetryStreamsDefinition;<a name="line.12"></a>
<FONT color="green">013</FONT>    import org.hackystat.telemetry.analyzer.language.ast.TextPosition;<a name="line.13"></a>
<FONT color="green">014</FONT>    import org.hackystat.telemetry.analyzer.language.parser.impl.TelemetryLanguageParserImpl;<a name="line.14"></a>
<FONT color="green">015</FONT>    <a name="line.15"></a>
<FONT color="green">016</FONT>    /**<a name="line.16"></a>
<FONT color="green">017</FONT>     * Parser for telemetry language. All static methods in this class are thread-safe.<a name="line.17"></a>
<FONT color="green">018</FONT>     * <a name="line.18"></a>
<FONT color="green">019</FONT>     * @author (Cedric) Qin Zhang<a name="line.19"></a>
<FONT color="green">020</FONT>     * @version $Id$<a name="line.20"></a>
<FONT color="green">021</FONT>     */<a name="line.21"></a>
<FONT color="green">022</FONT>    public class TelemetryLanguageParser {<a name="line.22"></a>
<FONT color="green">023</FONT>    <a name="line.23"></a>
<FONT color="green">024</FONT>      /**<a name="line.24"></a>
<FONT color="green">025</FONT>       * Private construct to prevent this class from being instantiated.<a name="line.25"></a>
<FONT color="green">026</FONT>       *<a name="line.26"></a>
<FONT color="green">027</FONT>       */<a name="line.27"></a>
<FONT color="green">028</FONT>      private TelemetryLanguageParser() {<a name="line.28"></a>
<FONT color="green">029</FONT>      }<a name="line.29"></a>
<FONT color="green">030</FONT>      <a name="line.30"></a>
<FONT color="green">031</FONT>      /**<a name="line.31"></a>
<FONT color="green">032</FONT>       * Parsing full telemetry streams and charts definitions.<a name="line.32"></a>
<FONT color="green">033</FONT>       * <a name="line.33"></a>
<FONT color="green">034</FONT>       * @param string The definitions.<a name="line.34"></a>
<FONT color="green">035</FONT>       * @return A list containing &lt;code&gt;TelemetryDefinition&lt;/code&gt; objects in the order appeared.<a name="line.35"></a>
<FONT color="green">036</FONT>       * <a name="line.36"></a>
<FONT color="green">037</FONT>       * @throws ParsingException If there is parsing error.<a name="line.37"></a>
<FONT color="green">038</FONT>       */<a name="line.38"></a>
<FONT color="green">039</FONT>      @SuppressWarnings("unchecked")<a name="line.39"></a>
<FONT color="green">040</FONT>      public static List&lt;TelemetryDefinition&gt; parse(String string) throws ParsingException {<a name="line.40"></a>
<FONT color="green">041</FONT>        try {<a name="line.41"></a>
<FONT color="green">042</FONT>          TelemetryLanguageParserImpl parser <a name="line.42"></a>
<FONT color="green">043</FONT>              = new TelemetryLanguageParserImpl(new StringReader(string));<a name="line.43"></a>
<FONT color="green">044</FONT>          List&lt;TelemetryDefinition&gt; defs = parser.all_input();<a name="line.44"></a>
<FONT color="green">045</FONT>          TextExtractor textExtractor = new TextExtractor(string);<a name="line.45"></a>
<FONT color="green">046</FONT>          for (TelemetryDefinition def : defs) {<a name="line.46"></a>
<FONT color="green">047</FONT>            def.setDefinitionString(textExtractor.extract(def.getTextPosition()));       <a name="line.47"></a>
<FONT color="green">048</FONT>          }<a name="line.48"></a>
<FONT color="green">049</FONT>          return defs;<a name="line.49"></a>
<FONT color="green">050</FONT>        }<a name="line.50"></a>
<FONT color="green">051</FONT>        catch (Throwable ex) { // might get JavaCC TokenMgrError<a name="line.51"></a>
<FONT color="green">052</FONT>          throw new ParsingException(ex);<a name="line.52"></a>
<FONT color="green">053</FONT>        }<a name="line.53"></a>
<FONT color="green">054</FONT>      }<a name="line.54"></a>
<FONT color="green">055</FONT>    <a name="line.55"></a>
<FONT color="green">056</FONT>      /**<a name="line.56"></a>
<FONT color="green">057</FONT>       * Parses telemetry "streams" object definition.<a name="line.57"></a>
<FONT color="green">058</FONT>       * <a name="line.58"></a>
<FONT color="green">059</FONT>       * @param string A telemetry query statement that defines a telemetry "streams" object. <a name="line.59"></a>
<FONT color="green">060</FONT>       *        Note that you should not include the final semi-colon.<a name="line.60"></a>
<FONT color="green">061</FONT>       *        <a name="line.61"></a>
<FONT color="green">062</FONT>       * @return Java object representation of the "streams" definition.<a name="line.62"></a>
<FONT color="green">063</FONT>       * <a name="line.63"></a>
<FONT color="green">064</FONT>       * @throws ParsingException If the input is not grammatically correct.<a name="line.64"></a>
<FONT color="green">065</FONT>       */<a name="line.65"></a>
<FONT color="green">066</FONT>      public static TelemetryStreamsDefinition parseStreamsDef(String string) throws ParsingException {<a name="line.66"></a>
<FONT color="green">067</FONT>        try {<a name="line.67"></a>
<FONT color="green">068</FONT>          TelemetryLanguageParserImpl parser <a name="line.68"></a>
<FONT color="green">069</FONT>              = new TelemetryLanguageParserImpl(new StringReader(string));<a name="line.69"></a>
<FONT color="green">070</FONT>          TelemetryStreamsDefinition def = parser.streams_statement_input();<a name="line.70"></a>
<FONT color="green">071</FONT>          def.setDefinitionString(new TextExtractor(string).extract(def.getTextPosition()));<a name="line.71"></a>
<FONT color="green">072</FONT>          return def;<a name="line.72"></a>
<FONT color="green">073</FONT>        }<a name="line.73"></a>
<FONT color="green">074</FONT>        catch (Throwable ex) { // might get JavaCC TokenMgrError<a name="line.74"></a>
<FONT color="green">075</FONT>          throw new ParsingException(ex);<a name="line.75"></a>
<FONT color="green">076</FONT>        }<a name="line.76"></a>
<FONT color="green">077</FONT>      }<a name="line.77"></a>
<FONT color="green">078</FONT>    <a name="line.78"></a>
<FONT color="green">079</FONT>      /**<a name="line.79"></a>
<FONT color="green">080</FONT>       * Parses telemetry "chart" object definition.<a name="line.80"></a>
<FONT color="green">081</FONT>       * <a name="line.81"></a>
<FONT color="green">082</FONT>       * @param string A telemetry query statement that defines a telemetry "chart" object. <a name="line.82"></a>
<FONT color="green">083</FONT>       *        Note that you should not include the final semi-colon.<a name="line.83"></a>
<FONT color="green">084</FONT>       *          <a name="line.84"></a>
<FONT color="green">085</FONT>       * @return Java object representation of the "chart" definition.<a name="line.85"></a>
<FONT color="green">086</FONT>       * <a name="line.86"></a>
<FONT color="green">087</FONT>       * @throws ParsingException If the input is not gramatically correct.<a name="line.87"></a>
<FONT color="green">088</FONT>       */<a name="line.88"></a>
<FONT color="green">089</FONT>      public static TelemetryChartDefinition parseChartDef(String string) throws ParsingException {<a name="line.89"></a>
<FONT color="green">090</FONT>        try {<a name="line.90"></a>
<FONT color="green">091</FONT>          TelemetryLanguageParserImpl parser <a name="line.91"></a>
<FONT color="green">092</FONT>              = new TelemetryLanguageParserImpl(new StringReader(string));<a name="line.92"></a>
<FONT color="green">093</FONT>          TelemetryChartDefinition def = parser.chart_statement_input();<a name="line.93"></a>
<FONT color="green">094</FONT>          def.setDefinitionString(new TextExtractor(string).extract(def.getTextPosition()));<a name="line.94"></a>
<FONT color="green">095</FONT>          return def;<a name="line.95"></a>
<FONT color="green">096</FONT>        }<a name="line.96"></a>
<FONT color="green">097</FONT>        catch (Throwable ex) { // might get JavaCC TokenMgrError<a name="line.97"></a>
<FONT color="green">098</FONT>          throw new ParsingException(ex);<a name="line.98"></a>
<FONT color="green">099</FONT>        }<a name="line.99"></a>
<FONT color="green">100</FONT>      }<a name="line.100"></a>
<FONT color="green">101</FONT>      <a name="line.101"></a>
<FONT color="green">102</FONT>      /**<a name="line.102"></a>
<FONT color="green">103</FONT>       * Parses telemetry "chart y-axis" object definition.<a name="line.103"></a>
<FONT color="green">104</FONT>       * <a name="line.104"></a>
<FONT color="green">105</FONT>       * @param string A telemetry query statement that defines a telemetry "chart y-axis" object. <a name="line.105"></a>
<FONT color="green">106</FONT>       *        Note that you should not include the final semi-colon.<a name="line.106"></a>
<FONT color="green">107</FONT>       *          <a name="line.107"></a>
<FONT color="green">108</FONT>       * @return Java object representation of the "chart y-axis" definition.<a name="line.108"></a>
<FONT color="green">109</FONT>       * <a name="line.109"></a>
<FONT color="green">110</FONT>       * @throws ParsingException If the input is not gramatically correct.<a name="line.110"></a>
<FONT color="green">111</FONT>       */<a name="line.111"></a>
<FONT color="green">112</FONT>      public static TelemetryChartYAxisDefinition parseChartYAxisDef(String string) <a name="line.112"></a>
<FONT color="green">113</FONT>          throws ParsingException {<a name="line.113"></a>
<FONT color="green">114</FONT>        try {<a name="line.114"></a>
<FONT color="green">115</FONT>          TelemetryLanguageParserImpl parser <a name="line.115"></a>
<FONT color="green">116</FONT>              = new TelemetryLanguageParserImpl(new StringReader(string));<a name="line.116"></a>
<FONT color="green">117</FONT>          TelemetryChartYAxisDefinition def = parser.chart_y_axis_statement_input();<a name="line.117"></a>
<FONT color="green">118</FONT>          def.setDefinitionString(new TextExtractor(string).extract(def.getTextPosition()));<a name="line.118"></a>
<FONT color="green">119</FONT>          return def;<a name="line.119"></a>
<FONT color="green">120</FONT>        }<a name="line.120"></a>
<FONT color="green">121</FONT>        catch (Throwable ex) { // might get JavaCC TokenMgrError<a name="line.121"></a>
<FONT color="green">122</FONT>          throw new ParsingException(ex);<a name="line.122"></a>
<FONT color="green">123</FONT>        }<a name="line.123"></a>
<FONT color="green">124</FONT>      }<a name="line.124"></a>
<FONT color="green">125</FONT>    <a name="line.125"></a>
<FONT color="green">126</FONT>      /**<a name="line.126"></a>
<FONT color="green">127</FONT>       * Parses telemetry "report" object definition.<a name="line.127"></a>
<FONT color="green">128</FONT>       * <a name="line.128"></a>
<FONT color="green">129</FONT>       * @param string A telemetry query statement that defines a telemetry "report" object. <a name="line.129"></a>
<FONT color="green">130</FONT>       *        Note that you should not include the final semi-colon.<a name="line.130"></a>
<FONT color="green">131</FONT>       *          <a name="line.131"></a>
<FONT color="green">132</FONT>       * @return Java object representation of the "report" definition.<a name="line.132"></a>
<FONT color="green">133</FONT>       * <a name="line.133"></a>
<FONT color="green">134</FONT>       * @throws ParsingException If the input is not gramatically correct.<a name="line.134"></a>
<FONT color="green">135</FONT>       */<a name="line.135"></a>
<FONT color="green">136</FONT>      public static TelemetryReportDefinition parseReportDef(String string) throws ParsingException {<a name="line.136"></a>
<FONT color="green">137</FONT>        try {<a name="line.137"></a>
<FONT color="green">138</FONT>          TelemetryLanguageParserImpl parser <a name="line.138"></a>
<FONT color="green">139</FONT>              = new TelemetryLanguageParserImpl(new StringReader(string));<a name="line.139"></a>
<FONT color="green">140</FONT>          TelemetryReportDefinition def = parser.report_statement_input();<a name="line.140"></a>
<FONT color="green">141</FONT>          def.setDefinitionString(new TextExtractor(string).extract(def.getTextPosition()));<a name="line.141"></a>
<FONT color="green">142</FONT>          return def;<a name="line.142"></a>
<FONT color="green">143</FONT>        }<a name="line.143"></a>
<FONT color="green">144</FONT>        catch (Throwable ex) { // might get JavaCC TokenMgrError<a name="line.144"></a>
<FONT color="green">145</FONT>          throw new ParsingException(ex);<a name="line.145"></a>
<FONT color="green">146</FONT>        }<a name="line.146"></a>
<FONT color="green">147</FONT>      }<a name="line.147"></a>
<FONT color="green">148</FONT>      <a name="line.148"></a>
<FONT color="green">149</FONT>      /**<a name="line.149"></a>
<FONT color="green">150</FONT>       * Extracts text at given position.<a name="line.150"></a>
<FONT color="green">151</FONT>       * <a name="line.151"></a>
<FONT color="green">152</FONT>       * @author (Cedric) Qin ZHANG<a name="line.152"></a>
<FONT color="green">153</FONT>       * @version $Id$<a name="line.153"></a>
<FONT color="green">154</FONT>       */<a name="line.154"></a>
<FONT color="green">155</FONT>      private static class TextExtractor {<a name="line.155"></a>
<FONT color="green">156</FONT>        <a name="line.156"></a>
<FONT color="green">157</FONT>        private List&lt;String&gt; lines = new ArrayList&lt;String&gt;(4);<a name="line.157"></a>
<FONT color="green">158</FONT>        <a name="line.158"></a>
<FONT color="green">159</FONT>        /**<a name="line.159"></a>
<FONT color="green">160</FONT>         * Constructs this instance.<a name="line.160"></a>
<FONT color="green">161</FONT>         * <a name="line.161"></a>
<FONT color="green">162</FONT>         * @param input The input string.<a name="line.162"></a>
<FONT color="green">163</FONT>         * @throws Exception If the input string cannot be parsed into lines.<a name="line.163"></a>
<FONT color="green">164</FONT>         */<a name="line.164"></a>
<FONT color="green">165</FONT>        private TextExtractor(String input) throws Exception {<a name="line.165"></a>
<FONT color="green">166</FONT>          BufferedReader reader = new BufferedReader(new StringReader(input));<a name="line.166"></a>
<FONT color="green">167</FONT>          String line = reader.readLine();<a name="line.167"></a>
<FONT color="green">168</FONT>          while (line != null) {<a name="line.168"></a>
<FONT color="green">169</FONT>            this.lines.add(line);<a name="line.169"></a>
<FONT color="green">170</FONT>            line = reader.readLine();<a name="line.170"></a>
<FONT color="green">171</FONT>          }<a name="line.171"></a>
<FONT color="green">172</FONT>          reader.close();<a name="line.172"></a>
<FONT color="green">173</FONT>        }<a name="line.173"></a>
<FONT color="green">174</FONT>        <a name="line.174"></a>
<FONT color="green">175</FONT>        /**<a name="line.175"></a>
<FONT color="green">176</FONT>         * Extracts text at given position.<a name="line.176"></a>
<FONT color="green">177</FONT>         * <a name="line.177"></a>
<FONT color="green">178</FONT>         * @param textPosition The position.<a name="line.178"></a>
<FONT color="green">179</FONT>         * @return The extracted text.<a name="line.179"></a>
<FONT color="green">180</FONT>         * @throws Exception If we cannot extract the text.<a name="line.180"></a>
<FONT color="green">181</FONT>         */<a name="line.181"></a>
<FONT color="green">182</FONT>        private String extract(TextPosition textPosition) throws Exception {<a name="line.182"></a>
<FONT color="green">183</FONT>          //Note: the index in textPosition is 1-indexed.<a name="line.183"></a>
<FONT color="green">184</FONT>          int startRow = textPosition.getBeginLine() - 1;<a name="line.184"></a>
<FONT color="green">185</FONT>          int startCol = textPosition.getBeginColumn() - 1; <a name="line.185"></a>
<FONT color="green">186</FONT>          int endRow = textPosition.getEndLine() - 1;<a name="line.186"></a>
<FONT color="green">187</FONT>          int endCol = textPosition.getEndColumn() - 1;<a name="line.187"></a>
<FONT color="green">188</FONT>          <a name="line.188"></a>
<FONT color="green">189</FONT>          if (startRow &lt; endRow) {<a name="line.189"></a>
<FONT color="green">190</FONT>            StringBuffer buffer = new StringBuffer(64);      <a name="line.190"></a>
<FONT color="green">191</FONT>            String line = this.lines.get(startRow);<a name="line.191"></a>
<FONT color="green">192</FONT>            buffer.append(line.substring(startCol)).append('\n');<a name="line.192"></a>
<FONT color="green">193</FONT>            for (int i = startRow + 1; i &lt; endRow; i++) {<a name="line.193"></a>
<FONT color="green">194</FONT>              buffer.append(this.lines.get(i)).append('\n');<a name="line.194"></a>
<FONT color="green">195</FONT>            }<a name="line.195"></a>
<FONT color="green">196</FONT>            line = this.lines.get(endRow);<a name="line.196"></a>
<FONT color="green">197</FONT>            buffer.append(line.substring(0, endCol + 1));<a name="line.197"></a>
<FONT color="green">198</FONT>            return buffer.toString();<a name="line.198"></a>
<FONT color="green">199</FONT>          }<a name="line.199"></a>
<FONT color="green">200</FONT>          else if (startRow == endRow) {<a name="line.200"></a>
<FONT color="green">201</FONT>            if (startCol &lt;= endCol) {<a name="line.201"></a>
<FONT color="green">202</FONT>              String line = this.lines.get(startRow);<a name="line.202"></a>
<FONT color="green">203</FONT>              return line.substring(startCol, endCol + 1);<a name="line.203"></a>
<FONT color="green">204</FONT>            }<a name="line.204"></a>
<FONT color="green">205</FONT>            else {<a name="line.205"></a>
<FONT color="green">206</FONT>              throw new Exception("Begin column is greater than end column.");<a name="line.206"></a>
<FONT color="green">207</FONT>            }<a name="line.207"></a>
<FONT color="green">208</FONT>          }<a name="line.208"></a>
<FONT color="green">209</FONT>          else {<a name="line.209"></a>
<FONT color="green">210</FONT>            throw new Exception("Begin line is greater than end line.");<a name="line.210"></a>
<FONT color="green">211</FONT>          }<a name="line.211"></a>
<FONT color="green">212</FONT>        }<a name="line.212"></a>
<FONT color="green">213</FONT>      }<a name="line.213"></a>
<FONT color="green">214</FONT>    }<a name="line.214"></a>




























































</PRE>
</BODY>
</HTML>
